CN102035823A - Signal processing device, signal processing method and communication system - Google Patents
Signal processing device, signal processing method and communication system Download PDFInfo
- Publication number
- CN102035823A CN102035823A CN201010243500XA CN201010243500A CN102035823A CN 102035823 A CN102035823 A CN 102035823A CN 201010243500X A CN201010243500X A CN 201010243500XA CN 201010243500 A CN201010243500 A CN 201010243500A CN 102035823 A CN102035823 A CN 102035823A
- Authority
- CN
- China
- Prior art keywords
- grouping
- mentioned
- signal processing
- processing unit
- side communicator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012545 processing Methods 0.000 title claims abstract description 136
- 238000004891 communication Methods 0.000 title claims abstract description 76
- 238000003672 processing method Methods 0.000 title claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000004148 unit process Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1053—IP private branch exchange [PBX] functionality entities or arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1033—Signalling gateways
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
- H04L65/1104—Session initiation protocol [SIP]
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Telephonic Communication Services (AREA)
Abstract
The invention relates to a signal processing device, a signal processing method and a communication system, which aims to realize the change processing of communication conversations between communication devices with different processing modes for communication conversations.The communication system comprises a plurality of communication devices and a signal processing device. The packet processing of the communication between the communication devices is realized by the signal processing device.The signal processing device comprises a packet receiving means for receiving a packet from a transmitting communication device and a receiving communication means for sending the received packet to the destination thereof, or a unit of the receiving communication mean for sending the received packet to the destination after the received packet is processed by a packet processing unit.When a communication session between a first transmitting communication device and the receiving communication device is established and the session is shifted to have a connection between a second transmitting communication device and the receiving communication device, the packet converting means converts the received packet received from the second transmitting communication device so as to maintain a consecutiveness related to a content of packets to be transmitted to the receiving communication device.
Description
Technical field
The present invention relates to signal processing apparatus, method and program and communication system, for example can be applied to voip communication system.
Background technology
Usually, in voip communication system, transmit and services such as guiding is connected, for example use SIP (Session Initiation Protocol for conversation is provided; With reference to non-patent literature 1) etc. the IP phone terminal control signal of being carried, carry out RTP/RTCP (Real-time Transport Protocol/RTP Control Protocol; With reference to non-patent literature 3 etc.) etc. the session change of subscriber signal, realize thus that conversation is transmitted and guiding such as is connected at service.
Fig. 6 is to use the voip communication system of prior art to realize the structure example of the action that the session of subscriber signal is changed.
Voip communication system 601 is systems that the IP phone service is provided to IP phone terminal 602-1～602-3.IP phone terminal 602-1～602-3 is the terminal as the user interface that is used to provide the IP phone service.
IP phone swap server 603 be used for and the IP phone terminal between the control device of exchange control signal and control connection, provide connection between the IP phone terminal, at the service of the forwarding of different IP telephone terminal etc.
Fig. 7 is the key diagram that the action example of (conversation is transmitted) is changed in the session that the subscriber signal in the voip communication system shown in Figure 6 601 is shown.
In Fig. 6, Fig. 7, control signal is respectively the control signal that exchanges between IP phone swap server 603 and each IP phone terminal, as signal form, adopts SIP normalized forms such as (RFC3261).Control signal 604-1 is the control signal that circulates between IP phone swap server 603 and IP phone terminal 602-1, and control signal 604-2 is the control signal that circulates between IP phone swap server 603 and IP phone terminal 602-2.And, in Fig. 6, though omitted diagram,, between IP phone swap server 603 and IP phone terminal 602-3, also carry out the exchange of control signal.
In Fig. 6, Fig. 7, subscriber signal is the signal (for example voice, vision signal etc.) that exchanges between the IP phone terminal, as signal form, adopts RTP normalized forms such as (RFC3550).Subscriber signal 605-1 is the signal that exchanges between IP phone terminal 602-1 and IP phone terminal 602-2.Subscriber signal 605-2 is the signal that exchanges between IP phone terminal 602-1 and IP phone terminal 602-3.Subscriber signal 605-3 is the signal that exchanges between IP phone terminal 602-2 and IP phone terminal 602-3.
Then, illustrate that the state that is in the conversation from IP phone terminal 602-1 and IP phone terminal 602-2 transfers the example of conversing and transmitting to IP phone terminal 602-3 from IP phone terminal 602-1 to.
If being IP phone terminal 602-1 and IP phone terminal 602-2, initial state is in the state in the conversation.Under this state, be that subscriber signal 605-1 is connected and the not connected state of subscriber signal 605-2 and subscriber signal 605-3.
Then, remove electricity and converse to IP phone terminal 602-3 from IP phone terminal 602-1, thus, subscriber signal 605-2 is connected, and subscriber signal 605-1 becomes reserved state (keeping connection).
At last, IP phone terminal 602-1 cuts off conversation, and thus, subscriber signal 605-1 and subscriber signal 605-2 are cut off, and subscriber signal 605-3 is formed by connecting in the conversation, and conversation is transmitted and finished.
[non-patent literature 1] IETF RFC3261
[non-patent literature 2] IETF RFC4566
[non-patent literature 3] IETF RFC3550
But, in the IP phone terminal about the existing voip communication system shown in the pie graph 6,7, do not have at the control signal of subscriber signal handle and connect a plurality of subscriber signals etc. session change function terminal (non-counterpart terminal) and have between the terminal (counterpart terminal) of session change function, the conversation forwarding can't be provided and/or guide the service of connection etc.
Therefore, signal processing apparatus that is preferably as follows and program and communication system: can realize that the communication session change between the different communicator of the processing mode of communication session handles.
Summary of the invention
The 1st signal processing apparatus of the present invention is characterised in that this signal processing apparatus has: (1) grouping receiving element, and it receives grouping from the transmitter side communicator; And (2) packet processing unit, its reception grouping that above-mentioned grouping receiving element is received directly sends to the receiver side communicator of its destination, send to the receiver side communicator of its destination after perhaps the reception grouping that above-mentioned grouping receiving element is received by the grouping Processing unit is processed, (3) under the situation of state transitions to the 2 transmitter side communicators that session is set up from the communication session that connects between the 1st transmitter side communicator and the receiver side communicator and the connection between the above-mentioned receiver side communicator, above-mentioned grouping Processing unit processes the reception grouping that receives from above-mentioned the 2nd transmitter side communicator, states the continuity of the packet content of receiver side communicator transmission to keep up.
The 2nd signal processing method of the present invention is characterised in that this signal processing method comprises: (1) grouping receiving step, and it receives grouping from the transmitter side communicator; (2) grouping Processing step, under the situation of state transitions to the 2 transmitter side communicators that session is set up from the communication session that connects between the 1st transmitter side communicator and the receiver side communicator and the connection between the above-mentioned receiver side communicator, the reception grouping that receives from above-mentioned the 2nd transmitter side communicator is processed, state the continuity of the packet content of receiver side communicator transmission to keep up; And (3) packet transaction step, the reception that receives in above-mentioned grouping receiving step grouping is directly sent to the receiver side communicator of its destination, send to the receiver side communicator of its destination after perhaps the reception grouping that above-mentioned grouping receiving element is received by above-mentioned grouping Processing step is processed.
The signal processing apparatus that the 3rd communication system of the present invention has a plurality of above-mentioned communicators and the grouping of circulating between communicator is handled, it is characterized in that this communication system applications the 1st signal processing apparatus of the present invention is as said signal processing device.
According to the present invention, can realize that the communication session change between the different communicator of the processing mode of communication session is handled.
Description of drawings
Fig. 1 is the integrally-built block diagram that the communication system of the 1st execution mode is shown.
Fig. 2 is the sequential chart of action that the communication system of the 1st execution mode is shown.
Fig. 3 is the key diagram that is illustrated in the content example of the grouping of circulating in the communication system of the 1st execution mode.
Fig. 4 is the flow chart of action that the signal processing apparatus of the 1st execution mode is shown.
Fig. 5 is the integrally-built block diagram that the communication system of the 2nd execution mode is shown.
Fig. 6 is the block diagram that the structure example of existing voip communication system is shown.
Fig. 7 is the key diagram that the action example of existing voip communication system is shown.
Label declaration
10: communication system; 20: signal processing apparatus; 30:IP telephone exchange server; 41～43:IP telephone terminal.
Embodiment
(A) the 1st execution mode
Below, be described in detail the 1st execution mode of signal processing apparatus of the present invention and program and communication system with reference to accompanying drawing.
(A-1) structure of the 1st execution mode
Fig. 1 is the integrally-built block diagram that the communication system 10 of this execution mode is shown.
In Fig. 1, in communication system 10, dispose signal processing apparatus 20, IP phone swap server 30 and 3 IP phone terminals 41,42,43.In addition, the value volume and range of product of the IP phone terminal of configuration is unqualified in communication system 10.
IP phone swap server 30 is born the function of IP phone terminal 41～43 being called out control.
In communication system 10, IP phone swap server 30 uses SIP that the IP phone communication between terminals is called out control, and still, employed agreement is not limited thereto.And, illustrated and used RTP and RTCP to carry out the situation of the media business (voice and video etc., its content is unqualified) between the IP phone terminal that still, employed agreement is not limited thereto.
20 pairs of subscriber signals that send from IP phone terminal 41～43 of signal processing apparatus carry out terminating, carry out this subscriber signal is converted to the processing that is suitable for the content that sends to the IP phone terminal of destination, the subscriber signal after destination IP phone terminal sends conversion.
Except the communication unit of hardware, signal processing apparatus 20 for example also can carry have the CPU, the ROM that are used for executive communication processing and data processing etc., the information processor of RAM etc., the program (signal handler that comprises execution mode) that this information processor carries out is installed constructs.
And the call control signals of 20 pairs of signal processing apparatus circulation between IP phone swap server 30 and IP phone terminal 41～43 carry out relaying, and the content of the call control signals of relaying is analyzed, and carry out the processing of subscriber signal based on this analysis result.The details of signal processing apparatus 20 is described in detail in action specification described later.
And, in Fig. 1, to establish IP phone terminal 41,42 and be session change counterpart terminal corresponding to session change function, IP phone terminal 43 changes non-counterpart terminal for the session that does not correspond to session change function.
(A-2) action of the 1st execution mode
The action of the communication system 10 of the 1st execution mode with above structure then, is described.
Fig. 2 is the sequential chart of the data circulation between each device that illustrates in the communication system shown in Figure 1 10.In addition, in the sequential chart of Fig. 2, the action of the subscriber signal of signal processing apparatus 20 is described, control signal is carried out simplicity of illustration.
If being IP phone terminal 41 and IP phone terminal 42, initial state is in state (S401) in the conversation.Under this state, the subscriber signal of 20 pairs of IP phone terminals 41 of signal processing apparatus and carry out terminating with the subscriber signal of IP phone terminal 42, send the subscriber signal that receives from IP phone terminal 41 to IP phone terminal 42, send the subscriber signal that receives from IP phone terminal 42 to IP phone terminal 41.
Then, establish according to the call control signals sent from IP phone swap server 30 and connect IP phone terminal 41 and IP phone terminal 43.Thus, IP phone terminal 42 is in the reservation, and IP phone terminal 41 and IP phone terminal 43 are in (S402) in the conversation.Under this state, signal processing apparatus 20 abandons the subscriber signal that receives from IP phone terminal 42, sends the subscriber signal of representing in the reservation to IP phone terminal 42.And signal processing apparatus 20 sends the subscriber signal that receives from IP phone terminal 41 to IP phone terminal 43, sends the subscriber signal (S403) that receives from IP phone terminal 43 to IP phone terminal 41.
Then, cut off the conversation (S404) of IP phone terminal 41 and IP phone terminal 43 by control signal.Thus, IP phone terminal 42 and IP phone terminal 43 are in the conversation.
Then, signal processing apparatus 20 sends the subscriber signal that receives from IP phone terminal 42 to IP phone terminal 43, sends the subscriber signal (S405) that receives from IP phone terminal 43 to IP phone terminal 41.
As mentioned above,, IP phone terminal 42 is not sent full control signal, keep the subscriber signal of initial connection, realize the conversation forwarding by signal processing apparatus 20.
Then, utilize the situation of subscriber signal being used RTP, illustrate to be used to keep the action that the subscriber signal of non-counterpart terminal is changed in above-mentioned session shown in Figure 2.
In order to keep subscriber signal, after session is changed non-counterpart terminal and begun conversation, need keep and be arranged in continuity, the continuity of timestamp (TIME) and the homogeneity of synchronisation source identifier (SSRC) of RTP sequence number (SEQ) that changes the RTP head of the RTP grouping that non-counterpart terminal sends to session.
Fig. 3 illustrates to be used to keep the key diagram of action example that the subscriber signal of non-counterpart terminal is changed in session.
In Fig. 3, will be illustrated as from the subscriber signal that IP phone terminal 41 is given signal processing apparatus 20 and receive subscriber signal SR1, will be illustrated as from the subscriber signal that IP phone terminal 42 is given signal processing apparatus 20 and receive subscriber signal SR2.And, in Fig. 3, will be illustrated as from the subscriber signal that signal processing apparatus 20 is given IP phone terminal 43 and send subscriber signal SS3.
And, in Fig. 3, in receiving subscriber signal SR1, comprise RTP grouping P11～P13 (order of establishing according to P11～P13 produces), in receiving subscriber signal SR2, comprise RTP grouping P21, P22 (be located at produced P11～P13 after, produce) according to the order of P21, P22.And, in Fig. 3, in sending subscriber signal SS3, comprise RTP grouping P31～P35.RTP grouping P31～P35 is respectively the grouping after RTP grouping P11～P13, P21, P22 are changed.And in Fig. 3, the demonstration relevant with each RTP grouping carried out simple record to the content of original RTP grouping and obtained, the value of " SEQ " expression RTP sequence number, the value that " TIME " express time stabs, the value of " SSRC " expression synchronisation source identifier.
As shown in Figure 3, by signal processing apparatus 20,, in sending subscriber signal SS3, also keep continuity even RTP sequence number and timestamp change to reception subscriber signal SR2 from receiving subscriber signal SR1.And,, in sending subscriber signal SS3, also keep the value of the reception subscriber signal SR1 that receives at first even SSRC changes to reception subscriber signal SR2 from receiving subscriber signal SR1.In addition, in signal processing apparatus 20, also can when the synchronisation source identifier that the RTP that receives and receive before this divides into groups different, be judged as and change the reception subscriber signal.
Then, the successional action of keeping the RTP sequence number in signal processing apparatus 20 is described.
The content of the variable that uses in the explanation of the successional action of keeping the RTP sequence number at first, is described.
Receiving benchmark sequence number (Rseq) is the sequence number of dividing into groups at the RTP that each reception subscriber signal receives at first.
Sequence number (SEQ) is the sequence number of dividing into groups as the RTP that the reception subscriber signal receives.
Nseq＝SEQ-Rseq+Sseq …(1)
The sequence number that sends the RTP grouping that benchmark sequence number (Sseq) will receive for the first time from initial reception subscriber signal is as initial value, when having changed the reception subscriber signal, changes to value to Nseq and adds value after 1.
When receiving the RTP grouping as the reception subscriber signal, calculate above-mentioned Nseq, the sequence number of change RTP grouping sends as sending subscriber signal.
In addition, under the situation of SEQ, may repeat with the sequence number that the RTP grouping before the change reception subscriber signal is given less than Rseq, so, the RTP grouping that receives is not sent as the transmission subscriber signal, but abandon this RTP grouping.
By above action, in signal processing apparatus 20,, also can keep the continuity of the RTP sequence number that sends subscriber signal even change receives subscriber signal, promptly changes session.And, even under the situation about arriving in (RTP grouping repeat receive) under the situation that the RTP sequence number that receives subscriber signal repeats or replacing order, also can former state keep sending, so, the influence that the subscriber signal terminal processes causes terminal can be eliminated.
Then, the successional action of keeping the RTP timestamp in signal processing apparatus 20 is described.
About the RTP timestamp, because parameters such as the codec of conveying RTP and sample frequencys, the increment size difference between the RTP grouping is so signal processing apparatus 20 is obtained increment size according to receiving subscriber signal.And signal processing apparatus 20 also considers to change the packet loss when receiving subscriber signal, keeps the continuity of RTP timestamp.
The content of the variable that uses in the explanation of the following successional action of keeping the RTP timestamp at first, is described.
Receiving stamp value fiducial time (RBt) is to receive the RTP grouped time stamps that subscriber signal receives at first at each.
The RTP grouped time stamps that transmission stamp value fiducial time (SBt) will receive for the first time from initial reception subscriber signal when having changed the reception subscriber signal, is upgraded numerical value as initial value.
Transmission maximum time stamp value (SMt) is the maximum to the timestamp of giving as the RTP grouping that sends the subscriber signal transmission.
Receiving final timestamp value (RLt) is from receiving the RTP grouped time stamps that subscriber signal receives at last.
Receiving final (RLc) constantly is from receiving the moment that subscriber signal receives the RTP grouping at last.
Timestamp (Pt) is as receiving the RTP grouped time stamps that subscriber signal receives.
Be the time of reception of dividing into groups as the RTP that the reception subscriber signal receives the time of reception (Pc).
Time of reception stabs the timestamp increment size that increment size (Dt) is the reception subscriber signal in receiving.
Receiving class interval (Dc) is the grouping arrival interval (ms) of the reception subscriber signal in receiving.
Fig. 4 is a flow chart of keeping the successional action of RTP timestamp in signal processing apparatus 20.
Use this flow chart and above-mentioned variable, the successional action of keeping the RTP timestamp in the signal processing apparatus 20 is described.
At first, in signal processing apparatus 20, receive the RTP grouping as receiving subscriber signal (S601).
Be under the situation of the RTP grouping that receives for the first time from initial reception subscriber signal in the RTP that receives grouping, variable is carried out initialization.If RBt=Pt, RLt=Pt, RLc=Pc carry out initialization (S602) thus.
Then,, confirm to have or not the change (S603) that receives subscriber signal, under the situation that does not have change, begin action, under the situation that has change, begin action from step S604 described later from step S606 described later according to the content of the RTP grouping that receives.
About the affirmation that has or not the change that receives subscriber signal among the step S603, for example have under the situation of the synchronisation source identifier different with the RTP grouping that receives before this in the RTP grouping that receives, be judged as and changed the reception subscriber signal, under identical situation, be judged as and do not changed.
And, also can analyze content based on the call control signals of the SIP that between IP phone swap server 30 and IP phone terminal, circulates, carry out change that having or not among the step S603 receive subscriber signal, be the affirmation of session switching timing.
Then, in above-mentioned steps S603, be judged to be under the situation that has the change that receives subscriber signal, use the calculating of following (2) formula, receive the renewal (S604) of stamp value fiducial time (SBt).
SBt＝SMt+Dt×(Pc-RLc)÷Dc …(2)
Then, follow the change that receives subscriber signal, variable is carried out initialization (S605).If SMt=SBt, RBt=Pt, RLt=Pt, RLc=Pc, Dt=0, Dc=0 carry out the initialization among the step S605 thus.
Then, stab increment (Dt) and class interval (Dc) update time (S606).When following (3) formula is set up, carry out the renewal of step S606 by following (4) formula, when following (5) formula is set up, carry out the renewal of step S606 by following (6) formula.
(Pt-RLt)＞Dt …(3)
Dt＝Pt-RLt …(4)
(Pc-RLc)＞Dc …(5)
Dc＝Pc-RLc …(6)
Then, upgrade reception end value (S607).Use RLt=Pt, RLc=Pc and carry out the renewal of step S607.
Then, upgrade RTP grouped time stamps (S608).Use following (7) formula and carry out the renewal of step S608.
Pt＝SBt+(Pt-RBt)…(7)
Then, send (S609) with having upgraded the RTP grouping behind the timestamp as sending subscriber signal.
By above action,, also can keep the continuity of the RTP timestamp that sends subscriber signal even change receives subscriber signal.
The action of the homogeneity of keeping RTP synchronisation source identifier in the signal processing apparatus 20 then, is described.
In the action of the homogeneity of keeping RTP synchronisation source identifier, use beginning synchronisation source identifier (Sssrc) as variable.
Beginning synchronisation source identifier (Sssrc) is the synchronisation source identifier of dividing into groups from the RTP that initial reception subscriber signal receives for the first time.When receiving the RTP grouping as the reception subscriber signal, the synchronisation source identifier that RTP is divided into groups changes to Sssrc, sends as sending subscriber signal.
As mentioned above, by the processing of signal processing apparatus 20,, also can keep the homogeneity of the RTP synchronisation source identifier that sends subscriber signal even changed the reception subscriber signal.
(A-3) effect of the 1st execution mode
According to the 1st execution mode, can bring into play following effect.
By signal processing apparatus 20, the conversation service of transmitting between the different communicator of the mode of the communication session that the IP phone terminal that has the IP phone terminal of session change function and do not have session change function is such of can realizing is connected the communication session that waits in conversing and changes with guiding.
(B) the 2nd execution mode
Below, be described in detail the 2nd execution mode of signal processing apparatus of the present invention and program and communication system with reference to accompanying drawing.
(B-1) structure of the 2nd execution mode
Fig. 5 is the integrally-built block diagram that the communication system 10A of this execution mode is shown.
In Fig. 5, in communication system 10A, dispose signal processing apparatus 20A, IP phone swap server 30 and 3 IP phone terminals 41,42,43.IP phone swap server 30 is identical with the 1st execution mode with IP phone terminal 41,42,43, so detailed.
The signal processing apparatus 20A of the 2nd execution mode constructs device into redundancy structure with the signal processing apparatus 20 of the 1st execution mode, has processing unit 21-1 and processing unit 21-2.Processing unit 21-1,21-2 are respectively the devices that can carry out the processing identical with the signal processing apparatus 20 of the 1st execution mode, in Fig. 5, processing unit 21-1 is constructed device into the utilization system, processing unit 21-2 is constructed device into standby system, become so-called active/standby structure.
In Fig. 5, in signal processing apparatus 20A, the processing unit of standby system only is processing unit 21-2, still, also can have the processing unit of a plurality of standby systems.
Switch to condition (opportunity) and the switching mode of the processing unit 21-2 of standby system about processing unit 21-1 from the utilization system, particular content is unqualified, for example can be in the action that monitors the processing unit 21-1 of utilization system by not shown supervision handling part (perhaps Wai Bu monitoring arrangement), detecting under the situation of fault, switching to processing unit 21-2 and change.In addition, about the processing that the processing unit 21-1 from the utilization system switches to the processing unit 21-2 of standby system, also can use switching treatmenting units such as existing server unit.
And,, communicate the forwarding of session information to processing unit 21-2 from processing unit 21-1 in order to remain on the continuity of the grouping of circulation between the IP phone terminal 41～43.Then, switch to from standby system under the situation of utilization system, utilize the information of giving, remain on the continuity of the grouping of circulation between the IP phone terminal 41～43 from processing unit 21-1 at processing unit 21-2.
In addition, in action specification described later, be described in detail the detailed content to the information of processing unit 21-2 transmission from processing unit 21-1.
(B-2) action of the 2nd execution mode
The action of the communication system 10A of the 2nd execution mode with above structure then, is described.
Explanation illustrates in the 1st embodiment when the terminal action of subscriber signal is moved under redundancy structure appends action.Other actions are identical with the 1st execution mode.
Action when at first, the common processing of communication system 10A being described.
The utilization system carries out the action identical with the action that illustrates in the 1st execution mode, but, the variable of the following RTP sequence number that will keep in the utilization system, RTP timestamp and RTP synchronisation source identifier regularly is forwarded to standby system as synchrodata, keeps in standby system.
RTP sequence number: send benchmark sequence number (Sseq)
RTP timestamp: send maximum time stamp value (SMt), reception final (RLc) constantly, time of reception stamp increment size (Dt), receive class interval (Dc)
RTP synchronisation source identifier: beginning synchronisation source identifier (Sssrc)
Standby system upgrades the same variable of standby system according to the synchrodata that receives from the utilization system.
Then, the system's change action to processing unit 21-2 from processing unit 21-1 is described.
The utilization system can carry out the change action to standby system when standby system receives synchrodata, in addition, produced in the utilization system under the situation of fault etc., also can not carry out the switching to standby system especially, and stop action.
Standby system switches to the action of utilization system when receiving from the control signal that switches to the utilization system of not shown supervision handling part (perhaps Wai Bu monitoring arrangement) and subscriber signal.And standby system as described below beginning when switching moved.
Use the Sseq that is kept, begin to keep the successional action of RTP sequence number.
Use SMt, RLc, Dt, the Dc kept, the S604 from the successional action of keeping the RTP timestamp of above-mentioned Fig. 4 begins to keep the successional action of RTP timestamp.
Use the Sssrc kept, begin to keep the action of the homogeneity of RTP synchronisation source identifier.
(B-3) effect of the 2nd execution mode
According to the 2nd execution mode, can bring into play following effect.
Making processing unit in signal processing apparatus 20A is redundancy structure, so IP phone signal processing apparatus 20A can construct the system that reliability is higher than the 1st execution mode.
(C) other execution modes
The invention is not restricted to the respective embodiments described above, can enumerate following illustrated distortion execution mode.
(C-1) in the respective embodiments described above, having illustrated that the device as the process object of signal processing apparatus is the situation of IP phone terminal, but be not limited thereto, also can be that the subordinate at IP-PBX etc. takes in other communicators of terminal.
(C-2) in the above-described embodiment, illustrated in signal processing apparatus the RTP grouping waited situation about handling that still, grouping also can be used equally for RTCP.
(C-3) in the above-described embodiment, illustrated in signal processing apparatus the RTP grouping waited situation about handling that still, applied agreement is not limited thereto, and also can use the grouping of other real time communication.Under this situation, each substitution of variable that will use in the action specification of said signal processing device 20 thus, can be brought into play the effect identical with above-mentioned execution mode for the variables corresponding in this agreement.
Claims (8)
1. a signal processing apparatus is characterized in that, this signal processing apparatus has:
The grouping receiving element, it receives grouping from the transmitter side communicator; And
Packet processing unit, its reception grouping that above-mentioned grouping receiving element is received directly sends to the receiver side communicator of its destination, send to the receiver side communicator of its destination after perhaps the reception grouping that above-mentioned grouping receiving element is received by the grouping Processing unit is processed
Under the situation of state transitions to the 2 transmitter side communicators that session is set up from the communication session that connects between the 1st transmitter side communicator and the receiver side communicator and the connection between the above-mentioned receiver side communicator, above-mentioned grouping Processing unit processes the reception grouping that receives from above-mentioned the 2nd transmitter side communicator, states the continuity of the packet content of receiver side communicator transmission to keep up.
2. signal processing apparatus according to claim 1 is characterized in that,
Above-mentioned grouping Processing unit processes the grouping that receives from above-mentioned the 2nd transmitter side communicator, states the continuity of the sequence number that comprises in the grouping of receiver side communicator transmission to keep up at least.
3. signal processing apparatus according to claim 1 is characterized in that,
Above-mentioned grouping Processing unit processes the grouping that receives from above-mentioned the 2nd transmitter side communicator, states the continuity of the timestamp that comprises in the grouping of receiver side communicator transmission to keep up at least.
4. signal processing apparatus according to claim 1 is characterized in that,
Above-mentioned grouping Processing unit processes the grouping that receives from above-mentioned the 2nd transmitter side communicator, states the homogeneity of the identifier of the communication session that comprises in the grouping of receiver side communicator transmission to keep up at least.
5. according to each the described signal processing apparatus in the claim 1～4, it is characterized in that,
Above-mentioned receiver side communicator is that non-corresponding communicator is switched in the session that does not correspond to the session switch means, above-mentioned session switch means switches to this communication session and being connected of the 2nd communicator in the process of setting up the communication session be connected with the 1st communicator.
6. signal processing apparatus according to claim 1 is characterized in that,
Said signal processing device has a plurality of processing units, and this processing unit has above-mentioned grouping receiving element, above-mentioned packet processing unit and above-mentioned grouping Processing unit,
Said signal processing device also has:
Switch unit, when common, it makes the 1st processing unit move as the utilization system, when detecting the fault of above-mentioned the 1st processing unit, switches to the 2nd processing unit of standby system and it is moved from above-mentioned the 1st processing unit; And
The communication session information holding unit, when common, it makes above-mentioned the 2nd processing unit remain on the communication session information of the communication session of handling in above-mentioned the 1st processing unit,
Switching to above-mentioned the 2nd processing unit from above-mentioned the 1st processing unit and making under the situation that above-mentioned the 2nd processing unit moves as the utilization system, above-mentioned the 2nd processing unit uses above-mentioned communication session information, continues the grouping of the communication session of above-mentioned the 1st processing unit processes of processing.
7. a signal processing method is characterized in that, this signal processing method comprises:
The grouping receiving step, it receives grouping from the transmitter side communicator;
The grouping Processing step, under the situation of state transitions to the 2 transmitter side communicators that session is set up from the communication session that connects between the 1st transmitter side communicator and the receiver side communicator and the connection between the above-mentioned receiver side communicator, the reception grouping that receives from above-mentioned the 2nd transmitter side communicator is processed, state the continuity of the packet content of receiver side communicator transmission to keep up; And
The packet transaction step, it directly sends to the receiver side communicator of its destination with the reception that receives in above-mentioned grouping receiving step grouping, sends to the receiver side communicator of its destination after perhaps by above-mentioned grouping Processing step the reception grouping that receives in the above-mentioned grouping receiving step being processed.
8. communication system, the signal processing apparatus that this communication system has a plurality of communicators and the grouping of circulating between above-mentioned communicator is handled, it is characterized in that, each described signal processing apparatus in this communication system applications claim 1～5 is as said signal processing device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-225144 | 2009-09-29 | ||
| JP2009225144A JP5393380B2 (en) | 2009-09-29 | 2009-09-29 | Signal processing apparatus and program, and communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102035823A true CN102035823A (en) | 2011-04-27 |
| CN102035823B CN102035823B (en) | 2014-07-16 |
Family
ID=43781539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010243500.XA Active CN102035823B (en) | 2009-09-29 | 2010-07-30 | Signal processing device, signal processing method and communication system |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US9264456B2 (en) |
| JP (1) | JP5393380B2 (en) |
| CN (1) | CN102035823B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5634919B2 (en) * | 2011-03-14 | 2014-12-03 | 沖電気工業株式会社 | Communication apparatus and communication program |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1761240A (en) * | 2004-10-12 | 2006-04-19 | 丛林网络公司 | Be used for the intelligent integrated network security device that the height realizability is used |
| US20070183423A1 (en) * | 2006-02-03 | 2007-08-09 | Radioframe Networks, Inc. | Transporting call data via a packet data network |
| US20080175229A1 (en) * | 2007-01-19 | 2008-07-24 | Joo-Hong Lee | System for blind/attended transfer in session initiation protocol (SIP)-based network and method of controlling the transfer |
| US20090113066A1 (en) * | 2007-10-24 | 2009-04-30 | David Van Wie | Automated real-time data stream switching in a shared virtual area communication environment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6771644B1 (en) * | 1999-09-17 | 2004-08-03 | Lucent Technologies Inc. | Program insertion in real time IP multicast |
| JP4492516B2 (en) * | 2005-10-19 | 2010-06-30 | 沖電気工業株式会社 | Voice IP packet switching device |
| JP4730052B2 (en) | 2005-10-20 | 2011-07-20 | 沖電気工業株式会社 | Exchange device |
| US7715374B2 (en) | 2006-12-20 | 2010-05-11 | Oki Electric Industry Co. Ltd. | Redundancy gateway system |
| JP4308287B2 (en) * | 2006-12-20 | 2009-08-05 | 沖電気工業株式会社 | Redundant gateway system |
-
2009
- 2009-09-29 JP JP2009225144A patent/JP5393380B2/en active Active
-
2010
- 2010-07-29 US US12/846,258 patent/US9264456B2/en active Active
- 2010-07-30 CN CN201010243500.XA patent/CN102035823B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1761240A (en) * | 2004-10-12 | 2006-04-19 | 丛林网络公司 | Be used for the intelligent integrated network security device that the height realizability is used |
| US20070183423A1 (en) * | 2006-02-03 | 2007-08-09 | Radioframe Networks, Inc. | Transporting call data via a packet data network |
| US20080175229A1 (en) * | 2007-01-19 | 2008-07-24 | Joo-Hong Lee | System for blind/attended transfer in session initiation protocol (SIP)-based network and method of controlling the transfer |
| US20090113066A1 (en) * | 2007-10-24 | 2009-04-30 | David Van Wie | Automated real-time data stream switching in a shared virtual area communication environment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102035823B (en) | 2014-07-16 |
| US20110078314A1 (en) | 2011-03-31 |
| JP5393380B2 (en) | 2014-01-22 |
| US9264456B2 (en) | 2016-02-16 |
| JP2011077690A (en) | 2011-04-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7873035B2 (en) | Method and apparatus for voice-over-IP call recording and analysis | |
| US20060203807A1 (en) | Method and apparatus for Voice-over-IP call recording | |
| EP2014016B1 (en) | System and method of remote testing in loopback mode using mgcp/ncs | |
| CN102356619A (en) | Modified stream synchronization | |
| US20070165636A1 (en) | Methods, systems, and computer program products for providing transcoder free operation (TrFO) and interworking between unlicensed mobile access (UMA) and universal mobile telecommunications system (UMTS) call legs using a media gateway | |
| US20030048855A1 (en) | Method and device for the transmission of data in a packet-oriented data network | |
| CN101485172A (en) | Method and communication terminal for provision of VOIP | |
| CN105024903B (en) | A kind of centralized communication system | |
| EP2442520B1 (en) | Method and system for implementing large capacity call by using h.323 protocol stack | |
| CN101072212A (en) | Multimedia data monitoring method | |
| CN102035823B (en) | Signal processing device, signal processing method and communication system | |
| CN1976376B (en) | Method for calling session, IP telephone system and IP telephone terminal | |
| CN100469051C (en) | VoIP network, media proxy server, and method of providing additional services used in them | |
| JP4492516B2 (en) | Voice IP packet switching device | |
| CN201893842U (en) | Test system for detecting voice over internet phone (VOIP) device | |
| CN100401692C (en) | Packet voice network monitoring method | |
| JP2016540454A (en) | Endpoint information interaction processing method, apparatus, and telepresence endpoint | |
| WO2015117486A1 (en) | Automatic packet capture method and apparatus | |
| US7499461B2 (en) | Gateway apparatus | |
| CN108769068B (en) | Call control method, device, terminal and computer storage medium for soft switch | |
| US20120163371A1 (en) | Telephone System, Call Control Apparatus and Communication Connection Method | |
| JP2014007752A (en) | Signal processor and program, and communication system | |
| US9356850B2 (en) | Method for monitoring a communication system | |
| CN102857648A (en) | Enterprise-level voice transmission soft exchange communication system | |
| JP6673594B1 (en) | IP-PBX system, communication failure notification method, communication failure notification device, IP-PBX device, and communication failure notification program |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: OKI ELECTRIC INDUSTRY CO., LTD. Free format text: FORMER OWNER: OKI NETWORKS CO., LTD. Effective date: 20120910 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20120910 Address after: Tokyo, Japan, Japan Applicant after: Oki Electric Industry Co., Ltd. Address before: Tokyo, Japan, Japan Applicant before: Oki Networks Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |